A&D FX-120iWP Calibration, IP65 Cleaning, RS-232 & WPN Comparison Guide
- pete8781
- 7 days ago
- 2 min read
Updated: 6 days ago
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A&D FX-120iWP calibration is external, with 100 g and 50 g values listed for the model. This article focuses on calibration, verification, cleaning and communications. For the complete capacity, function and buyer overview, see the main FX-120iWP specification guide
Before calibration
Level the balance, clean and correctly seat the pan, stabilize room temperature and reduce drafts, vibration and static. Let the reference mass acclimate. Calibration should not be used to hide instability caused by airflow, sample evaporation, mechanical contact or electrostatic charge.
External calibration and independent verification
Use a suitable calibrated 100 g or 50 g reference and complete the CAL sequence. Remove the calibration mass, verify zero and test an independent known weight representative of the actual working range. For controlled systems, record as-found and as-left results rather than documenting only a successful adjustment.
Cleaning while preserving IP65
Do not immerse the balance or direct water from underneath. Use compatible cleaners, prevent residue beneath the pan, dry thoroughly and verify zero plus a known weight after cleaning. For examples of wet-lab, food-development, chemical and small-parts workflows, see the FX-120iWP application guide
RS-232C and interface choices
Standard RS-232C can preserve the environmental intent when the specified waterproof cable is used. A&D states that FXi-02 Quick USB, FXi-08 Ethernet and FXi-09 internal battery are mutually exclusive and remove IP65 compliance when installed. Plan connectivity before ordering the balance.
FX-120iWP versus FX-120iWPN
FX-120iWP is the standard process model. FX-120iWPN is the separate legal-for-trade IP65 model. Calibration or local inspection does not confer type approval on the plain WP configuration.
Troubleshooting priorities
For unstable readings, check drafts, vibration, static, sample temperature and pan contact. For consistent span error, verify with known weights and recalibrate or service as appropriate. If the local display is correct but transmitted data is wrong, troubleshoot cable and communication settings rather than calibration. For post-cleaning drift, inspect moisture and residue and allow the unit to stabilize.
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